Hexagonal liquid crystal lens array for 3D endoscopy | Zendy

Amir Hassanfiroozi | Zendy; YiPai Huang | Zendy; Bahram Javidi | Zendy; Han-Ping D. Shieh | Zendy

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Hexagonal liquid crystal lens array for 3D endoscopy

Author(s) -

Amir Hassanfiroozi,

YiPai Huang,

Bahram Javidi,

Han-Ping D. Shieh

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.000971

Subject(s) - lens (geology) , optics , liquid crystal , materials science , electrode , focal length , hexagonal crystal system , aperture (computer memory) , electrode array , phase (matter) , voltage , physics , chemistry , quantum mechanics , acoustics , crystallography

A liquid crystal lens array with a hexagonal arrangement is investigated experimentally. The uniqueness of this study exists in the fact that using convex-ring electrode provides a smooth and controllable applied potential profile across the aperture to manage the phase profile. We observed considerable differences between flat electrode and convex-ring electrode; in particular the lens focal length is variable in a wider range from 2.5cm to infinity. This study presents several noteworthy characteristics such as low driving voltage; 30 μm cell gap and the lens is electrically switchable between 2D/3D modes. We demonstrate a hexagonal LC-lens array for capturing 3D images by using single sensor using integral imaging.

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